i need to know what CPU to get for the P8Z68-M PRO, LGA 1155 Motherboard.... i think its sandy bridge 1155 but i just need someone to make sure im correct cause i dont want to buy the wrong CPU.
Any LGA 1155 will work but BIOS might have to be updated to support Ivy bridge (3xxx series). Sandy bridge (2xxx series) should work straight out of the box.
I5 2500K would be a good fit for your board.